/* 页面基本布局 */
.form-signin input[type][class]{
      margin-bottom: 15px;
}
.form-signin label{
      margin-bottom: 15px;
      width: 300px;
      height: 15px;
      z-index: 2;
      margin-top: 45px;
      position: absolute;
      padding: 0;
      border: 0;
      font-weight: 500;
      font-size: 12px;
      line-height: 15px;      
      color: #b6b6bb;
      padding-left: 10px;
      display: none;
}
.form-signin label.error{
      color: orange;
      display: block;
}
.form-signin label.show{
      display: block;
}
.form-signin label.success{
      display: block;
      color: yellowgreen;
}